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Re: (ET) ok, not the fusible link
Did you check the micro-switch on the speed control? The control is a
hard plastic that eventually wears. The only difference between forward
and reverse is if one particular micro-switch gets engaged or not. You
can usually bend the speed control bracket enough to make it work.
From: elec-trak-bounces cosmos phy tufts edu
[mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of Michael S
Sent: Monday, July 31, 2006 9:37 PM
To: David C Robie
Cc: elec-trak cosmos phy tufts edu
Subject: Re: (ET) ok, not the fusible link
On Mon, 31 Jul 2006, David C Robie wrote:
> BE SURE that all connections under the tractor to the motor especially
> the little wires are oK. You could've hooked something, a branch etc
I'll check 'em. Since it's working in reverse though, shouldn't that
all those connections are fine? My understanding from the schematics is
that the forward/reverse relay reverses the direction of the field (ok,
reverses the direction of the current that makes the field) to swap from
forward to reverse, but the same connections on the motor itself are
No? If that's the way it works, it seems like the connections at the
should be fine. I think.
> If it twer me would check the RTN contacts and open the kickplate,
Which are the RTN (Return to Neutral, I think?) contacts?
> put some WD better yet a good breakfree on all the big relay terminals
> then tighten em.
I assume the kickplate is the plate just in front of where you sit? :)
so, I've become somewhat familiar with things down there as I've poked
around. I've sprayed the connections with De-Oxit, but haven't loosened
and retightened all the connections.
> A bad connection at the 3 big terminals on the armature resistor guard
> front would cause this too. Breakfree em and tighten em.
Armature resistor guard? Do you mean the connections to R1 and R2 on the
"screen" above the charger?
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